Alaska wildlife officials collaborated with whale experts to successfully rescue a humpback whale that was entangled in crabbing gear off the coast of Gustavus, Alaska, preventing it from dying.

Two dead whales have washed up on Unalaska's shores in the past week: an adult fin whale — which is the second largest mammal in the world — and a juvenile humpback.

Late arrival of humpback whales may be related to a change in abundance of prey species.

The remains of a possible seal carcass tangled in netting may have come into contact postmortem, "ghost fishing" as a potential cause.

Dead humpback whale